A fuel injector was designed for a certain type of trapped vortex combustor.Then

experiments were conducted to check its atomizing performance under various conditions

including different gas to liquid ratios

gas pressures and liquid pressures.The cold and hot simulations of the combustor were conducted to study the performance

and the velocity field

the temperature field and mass fraction distribution of the combustor were obtained.The simulation results show that the combustor is reasonably designed with compact structure and high combustion efficiency.The wall temperature distribution of the cavity is ideal.The changing regularity of the pressure loss and the outlet temperature distribution were obtained by numerical simulation and experimental research.The total pressure loss of the combustor is a bit larger and the temperature distribution of outlet is uniform.The results can provide relevent reference for the engineering application of the trapped vortex combustor.